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Finding the Fourth Proportional to 518,295.30, 777,788.55 and 293,655.30

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Solution

The fourth proportional to 518,295.30, 777,788.55 and 293,655.30 is: 440,678.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,295.30 : 777,788.55 = 293,655.30 : x
  2. Step 2: Convert to fraction form
    518,295.30/777,788.55 = 293,655.30/x
  3. Step 3: Cross multiply
    518,295.30x = 777,788.55 × 293,655.30
  4. Step 4: Simplify right side
    518,295.30x = 228,401,729,986.82
  5. Step 5: Solve for x
    x = 228,401,729,986.82/518,295.30
  6. Step 6: Final answer
    x = 440,678.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.